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<a href="#nested-classes">Data Structures</a> &#124;
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<p>Functions dealing with the MQTT protocol exchanges.  
<a href="#details">More...</a></p>
<div class="textblock"><code>#include &lt;stdlib.h&gt;</code><br />
<code>#include &lt;string.h&gt;</code><br />
<code>#include &lt;stdint.h&gt;</code><br />
<code>#include &quot;MQTTProtocolClient.h&quot;</code><br />
<code>#include &quot;MQTTPersistence.h&quot;</code><br />
<code>#include &quot;Socket.h&quot;</code><br />
<code>#include &quot;SocketBuffer.h&quot;</code><br />
<code>#include &quot;StackTrace.h&quot;</code><br />
<code>#include &quot;Heap.h&quot;</code><br />
</div><div class="textblock"><div class="dynheader">
Include dependency graph for MQTTProtocolClient.c:</div>
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<div class="center"><img src="MQTTProtocolClient_8c__incl.png" border="0" usemap="#aMQTTProtocolClient_8c" alt=""/></div>
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<area shape="rect" title="Functions dealing with the MQTT protocol exchanges." alt="" coords="49,5,200,32"/>
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Data Structures</h2></td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structAckRequest.html">AckRequest</a></td></tr>
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Macros</h2></td></tr>
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#define&#160;</td><td class="memItemRight" valign="bottom"><b>min</b>(A,  B)&#160;&#160;&#160;( (A) &lt; (B) ? (A):(B))</td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:a0fc0d4eaad01f640c901311421533c3d"><td class="memItemLeft" align="right" valign="top"><a id="a0fc0d4eaad01f640c901311421533c3d"></a>
static void&#160;</td><td class="memItemRight" valign="bottom"><b>MQTTProtocol_storeQoS0</b> (<a class="el" href="structClients.html">Clients</a> *pubclient, <a class="el" href="structPublish.html">Publish</a> *publish)</td></tr>
<tr class="separator:a0fc0d4eaad01f640c901311421533c3d"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a4502a4b9257b32508fac87e42fb1d85a"><td class="memItemLeft" align="right" valign="top">static int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolClient_8c.html#a4502a4b9257b32508fac87e42fb1d85a">MQTTProtocol_startPublishCommon</a> (<a class="el" href="structClients.html">Clients</a> *pubclient, <a class="el" href="structPublish.html">Publish</a> *publish, int qos, int retained)</td></tr>
<tr class="memdesc:a4502a4b9257b32508fac87e42fb1d85a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Utility function to start a new publish exchange.  <a href="MQTTProtocolClient_8c.html#a4502a4b9257b32508fac87e42fb1d85a">More...</a><br /></td></tr>
<tr class="separator:a4502a4b9257b32508fac87e42fb1d85a"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ad2f52c0fff61c891b174d69b95bcd173"><td class="memItemLeft" align="right" valign="top">static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolClient_8c.html#ad2f52c0fff61c891b174d69b95bcd173">MQTTProtocol_retries</a> (START_TIME_TYPE now, <a class="el" href="structClients.html">Clients</a> *client, int regardless)</td></tr>
<tr class="memdesc:ad2f52c0fff61c891b174d69b95bcd173"><td class="mdescLeft">&#160;</td><td class="mdescRight">MQTT retry processing per client.  <a href="MQTTProtocolClient_8c.html#ad2f52c0fff61c891b174d69b95bcd173">More...</a><br /></td></tr>
<tr class="separator:ad2f52c0fff61c891b174d69b95bcd173"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a68e5f17517e75326c0869a22c7995358"><td class="memItemLeft" align="right" valign="top">static int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolClient_8c.html#a68e5f17517e75326c0869a22c7995358">MQTTProtocol_queueAck</a> (<a class="el" href="structClients.html">Clients</a> *client, int ackType, int msgId)</td></tr>
<tr class="memdesc:a68e5f17517e75326c0869a22c7995358"><td class="mdescLeft">&#160;</td><td class="mdescRight">Queue an ack message.  <a href="MQTTProtocolClient_8c.html#a68e5f17517e75326c0869a22c7995358">More...</a><br /></td></tr>
<tr class="separator:a68e5f17517e75326c0869a22c7995358"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a286c2ef2904b5eb4a0ffa5b598961c67"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolClient_8c.html#a286c2ef2904b5eb4a0ffa5b598961c67">messageIDCompare</a> (void *a, void *b)</td></tr>
<tr class="memdesc:a286c2ef2904b5eb4a0ffa5b598961c67"><td class="mdescLeft">&#160;</td><td class="mdescRight"><a class="el" href="structList.html" title="Structure to hold all data for one list.">List</a> callback function for comparing Message structures by message id.  <a href="MQTTProtocolClient_8c.html#a286c2ef2904b5eb4a0ffa5b598961c67">More...</a><br /></td></tr>
<tr class="separator:a286c2ef2904b5eb4a0ffa5b598961c67"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a0fa824f9702cb6b0d7c800fd65198fce"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolClient_8c.html#a0fa824f9702cb6b0d7c800fd65198fce">MQTTProtocol_assignMsgId</a> (<a class="el" href="structClients.html">Clients</a> *client)</td></tr>
<tr class="memdesc:a0fa824f9702cb6b0d7c800fd65198fce"><td class="mdescLeft">&#160;</td><td class="mdescRight">Assign a new message id for a client.  <a href="MQTTProtocolClient_8c.html#a0fa824f9702cb6b0d7c800fd65198fce">More...</a><br /></td></tr>
<tr class="separator:a0fa824f9702cb6b0d7c800fd65198fce"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a0f86c2cc2debfa39e275d3c76d5d0073"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolClient_8c.html#a0f86c2cc2debfa39e275d3c76d5d0073">MQTTProtocol_startPublish</a> (<a class="el" href="structClients.html">Clients</a> *pubclient, <a class="el" href="structPublish.html">Publish</a> *publish, int qos, int retained, <a class="el" href="structMessages.html">Messages</a> **mm)</td></tr>
<tr class="memdesc:a0f86c2cc2debfa39e275d3c76d5d0073"><td class="mdescLeft">&#160;</td><td class="mdescRight">Start a new publish exchange.  <a href="MQTTProtocolClient_8c.html#a0f86c2cc2debfa39e275d3c76d5d0073">More...</a><br /></td></tr>
<tr class="separator:a0f86c2cc2debfa39e275d3c76d5d0073"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:afbf121be11a48fcda3e0d639bc47472b"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structMessages.html">Messages</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolClient_8c.html#afbf121be11a48fcda3e0d639bc47472b">MQTTProtocol_createMessage</a> (<a class="el" href="structPublish.html">Publish</a> *publish, <a class="el" href="structMessages.html">Messages</a> **mm, int qos, int retained, int allocatePayload)</td></tr>
<tr class="memdesc:afbf121be11a48fcda3e0d639bc47472b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Copy and store message data for retries.  <a href="MQTTProtocolClient_8c.html#afbf121be11a48fcda3e0d639bc47472b">More...</a><br /></td></tr>
<tr class="separator:afbf121be11a48fcda3e0d639bc47472b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ac753a3ad12292a0a9c2f4343bd33817e"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structPublications.html">Publications</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolClient_8c.html#ac753a3ad12292a0a9c2f4343bd33817e">MQTTProtocol_storePublication</a> (<a class="el" href="structPublish.html">Publish</a> *publish, int *<a class="el" href="utf-8_8c.html#afed088663f8704004425cdae2120b9b3">len</a>)</td></tr>
<tr class="memdesc:ac753a3ad12292a0a9c2f4343bd33817e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Store message data for possible retry.  <a href="MQTTProtocolClient_8c.html#ac753a3ad12292a0a9c2f4343bd33817e">More...</a><br /></td></tr>
<tr class="separator:ac753a3ad12292a0a9c2f4343bd33817e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a900fa28a8774ad6f5535104bb62e7abf"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolClient_8c.html#a900fa28a8774ad6f5535104bb62e7abf">MQTTProtocol_removePublication</a> (<a class="el" href="structPublications.html">Publications</a> *p)</td></tr>
<tr class="memdesc:a900fa28a8774ad6f5535104bb62e7abf"><td class="mdescLeft">&#160;</td><td class="mdescRight">Remove stored message data.  <a href="MQTTProtocolClient_8c.html#a900fa28a8774ad6f5535104bb62e7abf">More...</a><br /></td></tr>
<tr class="separator:a900fa28a8774ad6f5535104bb62e7abf"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a2d7897d575be486bf1ed0459d7b2b8e7"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolClient_8c.html#a2d7897d575be486bf1ed0459d7b2b8e7">MQTTProtocol_handlePublishes</a> (void *pack, SOCKET sock)</td></tr>
<tr class="memdesc:a2d7897d575be486bf1ed0459d7b2b8e7"><td class="mdescLeft">&#160;</td><td class="mdescRight">Process an incoming publish packet for a socket The payload field of the packet has not been transferred to another buffer at this point.  <a href="MQTTProtocolClient_8c.html#a2d7897d575be486bf1ed0459d7b2b8e7">More...</a><br /></td></tr>
<tr class="separator:a2d7897d575be486bf1ed0459d7b2b8e7"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aa9f454819a84c7a43009253fabcea3f3"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolClient_8c.html#aa9f454819a84c7a43009253fabcea3f3">MQTTProtocol_handlePubacks</a> (void *pack, SOCKET sock, <a class="el" href="structPublications.html">Publications</a> **pubToRemove)</td></tr>
<tr class="memdesc:aa9f454819a84c7a43009253fabcea3f3"><td class="mdescLeft">&#160;</td><td class="mdescRight">Process an incoming puback packet for a socket.  <a href="MQTTProtocolClient_8c.html#aa9f454819a84c7a43009253fabcea3f3">More...</a><br /></td></tr>
<tr class="separator:aa9f454819a84c7a43009253fabcea3f3"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ac09429577a185297d8797d791b7116a2"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolClient_8c.html#ac09429577a185297d8797d791b7116a2">MQTTProtocol_handlePubrecs</a> (void *pack, SOCKET sock, <a class="el" href="structPublications.html">Publications</a> **pubToRemove)</td></tr>
<tr class="memdesc:ac09429577a185297d8797d791b7116a2"><td class="mdescLeft">&#160;</td><td class="mdescRight">Process an incoming pubrec packet for a socket.  <a href="MQTTProtocolClient_8c.html#ac09429577a185297d8797d791b7116a2">More...</a><br /></td></tr>
<tr class="separator:ac09429577a185297d8797d791b7116a2"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a362e0560d6f4f0e50237664a1a8e89a7"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolClient_8c.html#a362e0560d6f4f0e50237664a1a8e89a7">MQTTProtocol_handlePubrels</a> (void *pack, SOCKET sock)</td></tr>
<tr class="memdesc:a362e0560d6f4f0e50237664a1a8e89a7"><td class="mdescLeft">&#160;</td><td class="mdescRight">Process an incoming pubrel packet for a socket.  <a href="MQTTProtocolClient_8c.html#a362e0560d6f4f0e50237664a1a8e89a7">More...</a><br /></td></tr>
<tr class="separator:a362e0560d6f4f0e50237664a1a8e89a7"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a9aa163c85710d4936ae368b8b9412440"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolClient_8c.html#a9aa163c85710d4936ae368b8b9412440">MQTTProtocol_handlePubcomps</a> (void *pack, SOCKET sock, <a class="el" href="structPublications.html">Publications</a> **pubToRemove)</td></tr>
<tr class="memdesc:a9aa163c85710d4936ae368b8b9412440"><td class="mdescLeft">&#160;</td><td class="mdescRight">Process an incoming pubcomp packet for a socket.  <a href="MQTTProtocolClient_8c.html#a9aa163c85710d4936ae368b8b9412440">More...</a><br /></td></tr>
<tr class="separator:a9aa163c85710d4936ae368b8b9412440"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a218a69c333badc4a61b321bc830ac1e0"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolClient_8c.html#a218a69c333badc4a61b321bc830ac1e0">MQTTProtocol_keepalive</a> (START_TIME_TYPE now)</td></tr>
<tr class="memdesc:a218a69c333badc4a61b321bc830ac1e0"><td class="mdescLeft">&#160;</td><td class="mdescRight">MQTT protocol keepAlive processing.  <a href="MQTTProtocolClient_8c.html#a218a69c333badc4a61b321bc830ac1e0">More...</a><br /></td></tr>
<tr class="separator:a218a69c333badc4a61b321bc830ac1e0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a3a1acc3bd7b09ab9d52e15e4a97c4cb2"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolClient_8c.html#a3a1acc3bd7b09ab9d52e15e4a97c4cb2">MQTTProtocol_retry</a> (START_TIME_TYPE now, int doRetry, int regardless)</td></tr>
<tr class="memdesc:a3a1acc3bd7b09ab9d52e15e4a97c4cb2"><td class="mdescLeft">&#160;</td><td class="mdescRight">MQTT retry protocol and socket pending writes processing.  <a href="MQTTProtocolClient_8c.html#a3a1acc3bd7b09ab9d52e15e4a97c4cb2">More...</a><br /></td></tr>
<tr class="separator:a3a1acc3bd7b09ab9d52e15e4a97c4cb2"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a52e062f52e5a42275471eeb23040fc0e"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolClient_8c.html#a52e062f52e5a42275471eeb23040fc0e">MQTTProtocol_freeClient</a> (<a class="el" href="structClients.html">Clients</a> *client)</td></tr>
<tr class="memdesc:a52e062f52e5a42275471eeb23040fc0e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Free a client structure.  <a href="MQTTProtocolClient_8c.html#a52e062f52e5a42275471eeb23040fc0e">More...</a><br /></td></tr>
<tr class="separator:a52e062f52e5a42275471eeb23040fc0e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ab9c5a22f0cbd4fa648663de7ae7118ab"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolClient_8c.html#ab9c5a22f0cbd4fa648663de7ae7118ab">MQTTProtocol_emptyMessageList</a> (<a class="el" href="structList.html">List</a> *msgList)</td></tr>
<tr class="memdesc:ab9c5a22f0cbd4fa648663de7ae7118ab"><td class="mdescLeft">&#160;</td><td class="mdescRight">Empty a message list, leaving it able to accept new messages.  <a href="MQTTProtocolClient_8c.html#ab9c5a22f0cbd4fa648663de7ae7118ab">More...</a><br /></td></tr>
<tr class="separator:ab9c5a22f0cbd4fa648663de7ae7118ab"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a8514ddc8d0f346c0da19ab4d59b4062f"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolClient_8c.html#a8514ddc8d0f346c0da19ab4d59b4062f">MQTTProtocol_freeMessageList</a> (<a class="el" href="structList.html">List</a> *msgList)</td></tr>
<tr class="memdesc:a8514ddc8d0f346c0da19ab4d59b4062f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Empty and free up all storage used by a message list.  <a href="MQTTProtocolClient_8c.html#a8514ddc8d0f346c0da19ab4d59b4062f">More...</a><br /></td></tr>
<tr class="separator:a8514ddc8d0f346c0da19ab4d59b4062f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a5906689ff10dc091d1a2b317295d39b0"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolClient_8c.html#a5906689ff10dc091d1a2b317295d39b0">MQTTProtocol_writeAvailable</a> (SOCKET socket)</td></tr>
<tr class="memdesc:a5906689ff10dc091d1a2b317295d39b0"><td class="mdescLeft">&#160;</td><td class="mdescRight">Callback that is invoked when the socket is available for writing.  <a href="MQTTProtocolClient_8c.html#a5906689ff10dc091d1a2b317295d39b0">More...</a><br /></td></tr>
<tr class="separator:a5906689ff10dc091d1a2b317295d39b0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a447b65c664ebedef8fecb70e29dc1767"><td class="memItemLeft" align="right" valign="top">char *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolClient_8c.html#a447b65c664ebedef8fecb70e29dc1767">MQTTStrncpy</a> (char *dest, const char *src, size_t dest_size)</td></tr>
<tr class="memdesc:a447b65c664ebedef8fecb70e29dc1767"><td class="mdescLeft">&#160;</td><td class="mdescRight">Copy no more than dest_size -1 characters from the string pointed to by src to the array pointed to by dest.  <a href="MQTTProtocolClient_8c.html#a447b65c664ebedef8fecb70e29dc1767">More...</a><br /></td></tr>
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<tr class="memitem:a89588f085edc5cee4eb650e8ad114df4"><td class="memItemLeft" align="right" valign="top">char *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolClient_8c.html#a89588f085edc5cee4eb650e8ad114df4">MQTTStrdup</a> (const char *src)</td></tr>
<tr class="memdesc:a89588f085edc5cee4eb650e8ad114df4"><td class="mdescLeft">&#160;</td><td class="mdescRight">Duplicate a string, safely, allocating space on the heap.  <a href="MQTTProtocolClient_8c.html#a89588f085edc5cee4eb650e8ad114df4">More...</a><br /></td></tr>
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</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="var-members"></a>
Variables</h2></td></tr>
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<a class="el" href="structMQTTProtocol.html">MQTTProtocol</a>&#160;</td><td class="memItemRight" valign="bottom"><b>state</b></td></tr>
<tr class="separator:a2dc95966878cf339e99ab7f7d1f7cc82"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a2f44b42678b96ba591f6042671e3ba6b"><td class="memItemLeft" align="right" valign="top"><a id="a2f44b42678b96ba591f6042671e3ba6b"></a>
<a class="el" href="structClientStates.html">ClientStates</a> *&#160;</td><td class="memItemRight" valign="bottom"><b>bstate</b></td></tr>
<tr class="separator:a2f44b42678b96ba591f6042671e3ba6b"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Functions dealing with the MQTT protocol exchanges. </p>
<p>Some other related functions are in the MQTTProtocolOut module </p>
</div><h2 class="groupheader">Function Documentation</h2>
<a id="a286c2ef2904b5eb4a0ffa5b598961c67"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a286c2ef2904b5eb4a0ffa5b598961c67">&#9670;&nbsp;</a></span>messageIDCompare()</h2>

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          <td class="memname">int messageIDCompare </td>
          <td>(</td>
          <td class="paramtype">void *&#160;</td>
          <td class="paramname"><em>a</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">void *&#160;</td>
          <td class="paramname"><em>b</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p><a class="el" href="structList.html" title="Structure to hold all data for one list.">List</a> callback function for comparing Message structures by message id. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">a</td><td>first integer value </td></tr>
    <tr><td class="paramname">b</td><td>second integer value </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>boolean indicating whether a and b are equal </dd></dl>

</div>
</div>
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<h2 class="memtitle"><span class="permalink"><a href="#a0fa824f9702cb6b0d7c800fd65198fce">&#9670;&nbsp;</a></span>MQTTProtocol_assignMsgId()</h2>

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          <td class="memname">int MQTTProtocol_assignMsgId </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="structClients.html">Clients</a> *&#160;</td>
          <td class="paramname"><em>client</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Assign a new message id for a client. </p>
<p>Make sure it isn't already being used and does not exceed the maximum. </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">client</td><td>a client structure </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the next message id to use, or 0 if none available </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#afbf121be11a48fcda3e0d639bc47472b">&#9670;&nbsp;</a></span>MQTTProtocol_createMessage()</h2>

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          <td class="memname"><a class="el" href="structMessages.html">Messages</a>* MQTTProtocol_createMessage </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="structPublish.html">Publish</a> *&#160;</td>
          <td class="paramname"><em>publish</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="structMessages.html">Messages</a> **&#160;</td>
          <td class="paramname"><em>mm</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>qos</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>retained</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>allocatePayload</em>&#160;</td>
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        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
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<p>Copy and store message data for retries. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">publish</td><td>the publication data </td></tr>
    <tr><td class="paramname">mm</td><td>- pointer to the message data to store </td></tr>
    <tr><td class="paramname">qos</td><td>the MQTT QoS to use </td></tr>
    <tr><td class="paramname">retained</td><td>boolean - whether to set the MQTT retained flag </td></tr>
    <tr><td class="paramname">allocatePayload</td><td>boolean - whether or not to malloc payload </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>pointer to the message data stored </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ab9c5a22f0cbd4fa648663de7ae7118ab">&#9670;&nbsp;</a></span>MQTTProtocol_emptyMessageList()</h2>

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          <td class="memname">void MQTTProtocol_emptyMessageList </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="structList.html">List</a> *&#160;</td>
          <td class="paramname"><em>msgList</em></td><td>)</td>
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<p>Empty a message list, leaving it able to accept new messages. </p>
<dl class="params"><dt>Parameters</dt><dd>
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    <tr><td class="paramname">msgList</td><td>the message list to empty </td></tr>
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<h2 class="memtitle"><span class="permalink"><a href="#a52e062f52e5a42275471eeb23040fc0e">&#9670;&nbsp;</a></span>MQTTProtocol_freeClient()</h2>

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          <td class="memname">void MQTTProtocol_freeClient </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="structClients.html">Clients</a> *&#160;</td>
          <td class="paramname"><em>client</em></td><td>)</td>
          <td></td>
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      </table>
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<p>Free a client structure. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">client</td><td>the client data to free </td></tr>
  </table>
  </dd>
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<h2 class="memtitle"><span class="permalink"><a href="#a8514ddc8d0f346c0da19ab4d59b4062f">&#9670;&nbsp;</a></span>MQTTProtocol_freeMessageList()</h2>

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          <td class="memname">void MQTTProtocol_freeMessageList </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="structList.html">List</a> *&#160;</td>
          <td class="paramname"><em>msgList</em></td><td>)</td>
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<p>Empty and free up all storage used by a message list. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">msgList</td><td>the message list to empty and free </td></tr>
  </table>
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<h2 class="memtitle"><span class="permalink"><a href="#aa9f454819a84c7a43009253fabcea3f3">&#9670;&nbsp;</a></span>MQTTProtocol_handlePubacks()</h2>

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          <td class="memname">int MQTTProtocol_handlePubacks </td>
          <td>(</td>
          <td class="paramtype">void *&#160;</td>
          <td class="paramname"><em>pack</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">SOCKET&#160;</td>
          <td class="paramname"><em>sock</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="structPublications.html">Publications</a> **&#160;</td>
          <td class="paramname"><em>pubToRemove</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
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<p>Process an incoming puback packet for a socket. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">pack</td><td>pointer to the publish packet </td></tr>
    <tr><td class="paramname">sock</td><td>the socket on which the packet was received </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>completion code </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a9aa163c85710d4936ae368b8b9412440">&#9670;&nbsp;</a></span>MQTTProtocol_handlePubcomps()</h2>

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          <td class="memname">int MQTTProtocol_handlePubcomps </td>
          <td>(</td>
          <td class="paramtype">void *&#160;</td>
          <td class="paramname"><em>pack</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">SOCKET&#160;</td>
          <td class="paramname"><em>sock</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="structPublications.html">Publications</a> **&#160;</td>
          <td class="paramname"><em>pubToRemove</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Process an incoming pubcomp packet for a socket. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">pack</td><td>pointer to the publish packet </td></tr>
    <tr><td class="paramname">sock</td><td>the socket on which the packet was received </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>completion code </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a2d7897d575be486bf1ed0459d7b2b8e7">&#9670;&nbsp;</a></span>MQTTProtocol_handlePublishes()</h2>

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          <td class="memname">int MQTTProtocol_handlePublishes </td>
          <td>(</td>
          <td class="paramtype">void *&#160;</td>
          <td class="paramname"><em>pack</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">SOCKET&#160;</td>
          <td class="paramname"><em>sock</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Process an incoming publish packet for a socket The payload field of the packet has not been transferred to another buffer at this point. </p>
<p>If it's needed beyond the scope of this function, it has to be copied. </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">pack</td><td>pointer to the publish packet </td></tr>
    <tr><td class="paramname">sock</td><td>the socket on which the packet was received </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>completion code </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ac09429577a185297d8797d791b7116a2">&#9670;&nbsp;</a></span>MQTTProtocol_handlePubrecs()</h2>

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          <td class="memname">int MQTTProtocol_handlePubrecs </td>
          <td>(</td>
          <td class="paramtype">void *&#160;</td>
          <td class="paramname"><em>pack</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">SOCKET&#160;</td>
          <td class="paramname"><em>sock</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="structPublications.html">Publications</a> **&#160;</td>
          <td class="paramname"><em>pubToRemove</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Process an incoming pubrec packet for a socket. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">pack</td><td>pointer to the publish packet </td></tr>
    <tr><td class="paramname">sock</td><td>the socket on which the packet was received </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>completion code </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a362e0560d6f4f0e50237664a1a8e89a7">&#9670;&nbsp;</a></span>MQTTProtocol_handlePubrels()</h2>

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          <td class="memname">int MQTTProtocol_handlePubrels </td>
          <td>(</td>
          <td class="paramtype">void *&#160;</td>
          <td class="paramname"><em>pack</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">SOCKET&#160;</td>
          <td class="paramname"><em>sock</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Process an incoming pubrel packet for a socket. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">pack</td><td>pointer to the publish packet </td></tr>
    <tr><td class="paramname">sock</td><td>the socket on which the packet was received </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>completion code </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a218a69c333badc4a61b321bc830ac1e0">&#9670;&nbsp;</a></span>MQTTProtocol_keepalive()</h2>

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          <td class="memname">void MQTTProtocol_keepalive </td>
          <td>(</td>
          <td class="paramtype">START_TIME_TYPE&#160;</td>
          <td class="paramname"><em>now</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>MQTT protocol keepAlive processing. </p>
<p>Sends PINGREQ packets as required. </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">now</td><td>current time </td></tr>
  </table>
  </dd>
</dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a68e5f17517e75326c0869a22c7995358">&#9670;&nbsp;</a></span>MQTTProtocol_queueAck()</h2>

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          <td class="memname">int MQTTProtocol_queueAck </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="structClients.html">Clients</a> *&#160;</td>
          <td class="paramname"><em>client</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>ackType</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>msgId</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
  </td>
  <td class="mlabels-right">
<span class="mlabels"><span class="mlabel">static</span></span>  </td>
  </tr>
</table>
</div><div class="memdoc">

<p>Queue an ack message. </p>
<p>This is used when the socket is full (e.g. SSL_ERROR_WANT_WRITE). To be completed/cleared when the socket is no longer full </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">client</td><td>the client that received the published message </td></tr>
    <tr><td class="paramname">ackType</td><td>the type of ack to send </td></tr>
    <tr><td class="paramname">msgId</td><td>the msg id of the message we are acknowledging </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the completion code </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a900fa28a8774ad6f5535104bb62e7abf">&#9670;&nbsp;</a></span>MQTTProtocol_removePublication()</h2>

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          <td class="memname">void MQTTProtocol_removePublication </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="structPublications.html">Publications</a> *&#160;</td>
          <td class="paramname"><em>p</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Remove stored message data. </p>
<p>Opposite of storePublication </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">p</td><td>stored publication to remove </td></tr>
  </table>
  </dd>
</dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ad2f52c0fff61c891b174d69b95bcd173">&#9670;&nbsp;</a></span>MQTTProtocol_retries()</h2>

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          <td class="memname">static void MQTTProtocol_retries </td>
          <td>(</td>
          <td class="paramtype">START_TIME_TYPE&#160;</td>
          <td class="paramname"><em>now</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="structClients.html">Clients</a> *&#160;</td>
          <td class="paramname"><em>client</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>regardless</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
  </td>
  <td class="mlabels-right">
<span class="mlabels"><span class="mlabel">static</span></span>  </td>
  </tr>
</table>
</div><div class="memdoc">

<p>MQTT retry processing per client. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">now</td><td>current time </td></tr>
    <tr><td class="paramname">client</td><td>- the client to which to apply the retry processing </td></tr>
    <tr><td class="paramname">regardless</td><td>boolean - retry packets regardless of retry interval (used on reconnect) </td></tr>
  </table>
  </dd>
</dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a3a1acc3bd7b09ab9d52e15e4a97c4cb2">&#9670;&nbsp;</a></span>MQTTProtocol_retry()</h2>

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          <td class="memname">void MQTTProtocol_retry </td>
          <td>(</td>
          <td class="paramtype">START_TIME_TYPE&#160;</td>
          <td class="paramname"><em>now</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>doRetry</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>regardless</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>MQTT retry protocol and socket pending writes processing. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">now</td><td>current time </td></tr>
    <tr><td class="paramname">doRetry</td><td>boolean - retries as well as pending writes? </td></tr>
    <tr><td class="paramname">regardless</td><td>boolean - retry packets regardless of retry interval (used on reconnect) </td></tr>
  </table>
  </dd>
</dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a0f86c2cc2debfa39e275d3c76d5d0073">&#9670;&nbsp;</a></span>MQTTProtocol_startPublish()</h2>

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          <td class="memname">int MQTTProtocol_startPublish </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="structClients.html">Clients</a> *&#160;</td>
          <td class="paramname"><em>pubclient</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="structPublish.html">Publish</a> *&#160;</td>
          <td class="paramname"><em>publish</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>qos</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>retained</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="structMessages.html">Messages</a> **&#160;</td>
          <td class="paramname"><em>mm</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
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<p>Start a new publish exchange. </p>
<p>Store any state necessary and try to send the packet </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">pubclient</td><td>the client to send the publication to </td></tr>
    <tr><td class="paramname">publish</td><td>the publication data </td></tr>
    <tr><td class="paramname">qos</td><td>the MQTT QoS to use </td></tr>
    <tr><td class="paramname">retained</td><td>boolean - whether to set the MQTT retained flag </td></tr>
    <tr><td class="paramname">mm</td><td>- pointer to the message to send </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the completion code </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a4502a4b9257b32508fac87e42fb1d85a">&#9670;&nbsp;</a></span>MQTTProtocol_startPublishCommon()</h2>

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          <td class="memname">static int MQTTProtocol_startPublishCommon </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="structClients.html">Clients</a> *&#160;</td>
          <td class="paramname"><em>pubclient</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="structPublish.html">Publish</a> *&#160;</td>
          <td class="paramname"><em>publish</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>qos</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>retained</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
  </td>
  <td class="mlabels-right">
<span class="mlabels"><span class="mlabel">static</span></span>  </td>
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<p>Utility function to start a new publish exchange. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">pubclient</td><td>the client to send the publication to </td></tr>
    <tr><td class="paramname">publish</td><td>the publication data </td></tr>
    <tr><td class="paramname">qos</td><td>the MQTT QoS to use </td></tr>
    <tr><td class="paramname">retained</td><td>boolean - whether to set the MQTT retained flag </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the completion code </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ac753a3ad12292a0a9c2f4343bd33817e">&#9670;&nbsp;</a></span>MQTTProtocol_storePublication()</h2>

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          <td class="memname"><a class="el" href="structPublications.html">Publications</a>* MQTTProtocol_storePublication </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="structPublish.html">Publish</a> *&#160;</td>
          <td class="paramname"><em>publish</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int *&#160;</td>
          <td class="paramname"><em>len</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
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<p>Store message data for possible retry. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">publish</td><td>the publication data </td></tr>
    <tr><td class="paramname">len</td><td>returned length of the data stored </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the publication stored </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a5906689ff10dc091d1a2b317295d39b0">&#9670;&nbsp;</a></span>MQTTProtocol_writeAvailable()</h2>

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          <td class="memname">void MQTTProtocol_writeAvailable </td>
          <td>(</td>
          <td class="paramtype">SOCKET&#160;</td>
          <td class="paramname"><em>socket</em></td><td>)</td>
          <td></td>
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<p>Callback that is invoked when the socket is available for writing. </p>
<p>This is the last attempt made to acknowledge a message. Failures that occur here are ignored. </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">socket</td><td>the socket that is available for writing </td></tr>
  </table>
  </dd>
</dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a89588f085edc5cee4eb650e8ad114df4">&#9670;&nbsp;</a></span>MQTTStrdup()</h2>

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          <td class="memname">char* MQTTStrdup </td>
          <td>(</td>
          <td class="paramtype">const char *&#160;</td>
          <td class="paramname"><em>src</em></td><td>)</td>
          <td></td>
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<p>Duplicate a string, safely, allocating space on the heap. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">src</td><td>the source string which characters copy from </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the duplicated, allocated string </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a447b65c664ebedef8fecb70e29dc1767">&#9670;&nbsp;</a></span>MQTTStrncpy()</h2>

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          <td class="memname">char* MQTTStrncpy </td>
          <td>(</td>
          <td class="paramtype">char *&#160;</td>
          <td class="paramname"><em>dest</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const char *&#160;</td>
          <td class="paramname"><em>src</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">size_t&#160;</td>
          <td class="paramname"><em>dest_size</em>&#160;</td>
        </tr>
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          <td>)</td>
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<p>Copy no more than dest_size -1 characters from the string pointed to by src to the array pointed to by dest. </p>
<p>The destination string will always be null-terminated. </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">dest</td><td>the array which characters copy to </td></tr>
    <tr><td class="paramname">src</td><td>the source string which characters copy from </td></tr>
    <tr><td class="paramname">dest_size</td><td>the size of the memory pointed to by dest: copy no more than this -1 (allow for null). Must be &gt;= 1 </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the destination string pointer </dd></dl>
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